Electric toothbrush



FIG. 1 is a perspective view of an electric toothbrush, showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is an end elevational view thereof;

FIG. 6 is an elevational view of the opposite end thereof. 

The ornamental design for an electric toothbrush, as shown and described. 